Table 3.
RF/ACPA proportions and characteristics
| |
Controls |
Cases |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| N (%) | CCP titer | RF titer | N (%) | CCP titer | RF titer | Onset Age | Joints at onset | ESR at onset | |
| RF IgM – ACPA IgG - |
45 (90) |
3.9 |
6.5 |
272 (81.4) |
0 |
6 |
5.3 |
2 |
19 |
| RF IgM + ACPA IgG - |
4 (8) |
2.5 |
31 |
14 (4.2) |
0 |
47.5 |
8.0 |
4.5 |
28 |
| RF IgM – ACPA IgG + |
1 (2) |
185 |
0 |
23 (6.9) |
27 |
5 |
4.6 |
3 |
26 |
| RF IgM + ACPA IgG + | 0 (0) | - | - | 25 (7.5) | 358 | 137 | 11.5 | 8 | 22 |
There were 50 controls and 334 cases. Titers refer to median values except with reference to RF-/CCP + control where it refers to the actual value. Onset age, joints at onset and ESR at onset are median values.